Split String

[kelli]

hi

I have a variable. it is number
i want to split each of 3 digits of it with comma form right side.

example

PHP Code:
$test1=89245632;
echo $test1;

i want to show it as this: 89,245,632. -- This message may have been cut off and the rest will only be shown to members. To become a member, click here --

[seolion]

I dont think its that much difficult, BTW what you want to do with that? -- This message may have been cut off and the rest will only be shown to members. To become a member, click here --